Memory device



FIG. 1 is a perspective view of a memory device showing my new design;

FIG. 2 is a left view thereof, the right view being identical;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is an exploded perspective view thereof.

The broken line showing of the USB device is for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a memory device, as shown and described. 